Question

This topic has been discussed but I’ve been unsuccessful.

I have a basic mesh plot in MATLAB displaying on x,y,z axis and I want to insert an image (jpg) on the floor, bottom of the grid.

Answer 1

Just to support @Dan’s first suggestion (looking on the same thing while posted) with an example, here is how you can overlay or underlay an image on a surface using intensity values as surface grayscale:

[X,Y,Z] = peaks(256); % surface
I = double(imread('cameraman.tif')); % image  

figure;
mesh(X, Y, Z, I); % overlay image as texture
colormap gray; hold on; 
c = 1.5*min(Z(:)); % scaling Z- location of image 
mesh(X, Y, c*ones(size(Z)), I) % underlay image as a constant-height surface

However surf with setting 'texturemap' (linked answer, as he suggests) is a more slick approach.